The invention relates to a power transformer cake type winding negative cake automatic processing robot. The automatic processing robot includes an installation ring; a plurality of winding manufacturing devices are evenly arranged on a lower end surface of the installation ring; each winding manufacturing device includes a fixing sheet welded on the lower end surface of the installation ring, three lifting driving mechanisms are arranged on the lower end surface of the fixing sheet, an installation rack is arranged on the lower ends of the two lifting mechanisms at the left side of the fixing sheet, a negative cake block discharging mechanism which can automatically pick up a negative cake layer and rapidly take out of a negative cushion block is arranged on the center of the installation rack, a negative cake guide mechanism is arranged on the lower side of the right end of the installation rack, and the negative cake guide mechanism can automatically stretch to place the negative cake cushion block. The automatic processing robot can achieve automatic processing of cake type winding negative cakes, can avoid manual operations, can automatically place the negative cake cushion block, automatically pick up the negative cake cushion block, automatically fasten a guide wire bar, is simple to operate, is low in working load, and is high in working efficiency.